Three observations. One. The UK Government's submissions were not so much about persuading the CJEU that the matter was hypothetical but for domestic consumption - persuading Brexiters that (contrary to what the Court of Session said) the matter was not one the CJEU should decide
Two, the Council and Commission could not explain where you might find the machinery to limit revocability to unanimity. There is no intellectually dignified way to the solution for which they advocated.
Three, a requirement for unanimity also enables Member State X to put its parochial interests above those both of the departing MS and the EU as a whole. Neither Council nor Commission had a respectable response to this.
Sorry, this is #SuperGeek level law. But v important.
